40 
quadratis, in serie spirali dispositis ornata, et cingulis grano- 
sulis insculpta; apertura suborbiculari; columella in medio 
excavata, in dentem terminata; labro intus lirato, margine 
crenulato ; umbilico aperto, perspectivo. 
Hab. China Seas. 
In many respects this beautiful species of Gibbula resembles Om- 
phalius rubro-flammulatus, Koch. 
13. Marearitra pitecta, A.Adams. WM. testa orbiculato-conica, 
late umbilicata, nitente, albida, fammulis rufis radiatim picta; 
anfractibus convewis, cingulis elevatis, acutis, supremis crenu- 
latis, interstitiis concinne longitudinaliter striatis ornatis ; 
basi convexa, albida, sublevi, radiatim striata ; umbilico per- 
spectivo, margine crenulato. 
Hab. Straits of Magellan. Mus. Cuming. 
14. Marearira aspecta, A. Adams. WM. festa turbinato-conica, 
late umbilicata, grisea, aureo-nitente, fusco maculata; anfrac- 
tibus rotundis, ad suturas excavatis, cingulis elevatis, crenu- 
latis, subdistantibus, transversis, interstitiis longitudinaliter 
striatis ornatis ; basi convexa, cingulis concentricis insculpta ; 
umbilico magno, aperto, cingula elevata cincto, intus liris con- 
centricis et lineis radiantibus decussato. 
Hab. Australia. Mus. Cuming. 
15. MarGarira BIANGULOSA, A. Adams. WM. testa orbiculato- 
conica, late umbilicata, levi, brunnea, lineolis undulatis, longi- 
tudinalibus eoncinne picta; anfractibus planulatis, superne 
angulatis, ultimo biangulato ; suturis marginatis ; basi convexa, 
.cingulis concentricis insculpta; umbilico perspectivo, margine 
erenulato, intus lineis transversis et radiantibus eleganter 
decussato. 
Hab. Siam. Mus. Cuming. 
P.S. Since my former communication on the Trochide, I have 
had an opportunity of seeing the monograph of Trochus by Dr. Phi- 
lippi, and am enabled to add a few corrections and additional syno- 
nyms. 
ZIZIPHINUS JAVANICUS, Lamarck. 
Trochus Javanicus, Lamk. Hist. Nat. no. 50; Phil. Trochus, pl. 18. 
f. 5.—Ziziphinus zonamestus, A. Adams, Proc. Zool. Soc. no. 228, 
1853. 
CHLOROSTOMA NIGERRIMUM, Gmelin. 
Trochus nigerrimus, Gmel.—Trochus niger, Chemn.—Chlorostoma 
corrugatum, A. Adams, Proc. Zool. Soc. no. 228, 1853 (var.). 
GrsBuLa Preissrana, Philippi. 
Trochus Preissianus, Phil. Zeit. fir Malac. 1848, p.123; Mon. T7ro- 
chus, pl. 28. f. 3.—Gibbula porcellana, A. Adams, Proc. Zool. Soc. 
no, 228. p. 186, 1853. 
